| Commit message (Collapse) | Author | Age | Files | Lines |
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*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
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this is a resubmission of r280476. The problem with the original commit was that it was printing
out all numbers as signed, which was wrong for unsigned numbers with the MSB set. Fix that and
add a unit test covering that case.
llvm-svn: 280480
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This reverts commit r280476 as it breaks several tests on i386. I was fixing an 32-bit
breakage, and I did not run the 32-bit test suite before submitting, oops.
llvm-svn: 280478
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Summary:
It seems the original intention of the function was printing signed values in decimal format, and
unsigned values in hex (without the leading "0x"). However, signed and unsigned long were
exchanged, which lead to amusing test failures in TestMemoryFind.py.
Instead of just switching the two, I think we should just print everything in decimal here, as
the current behaviour is very confusing (especially when one does not request printing of types).
Nothing seems to depend on this behaviour except and we already have a way for the user to
request the format he wants when printing values for most commands (which presumably does not go
through this function).
I also add a unit tests for the function in question.
Reviewers: clayborg, granata.enrico
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D24126
llvm-svn: 280476
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Summary:
This is a Minidump parsing code.
There are still some more structures/data streams that need to be added.
The aim ot this is to be used in the implementation of
a minidump debugging plugin that works on all platforms/architectures.
Currently we have a windows-only plugin that uses the WinAPI to parse
the dump files.
Also added unittests for the current functionality.
Reviewers: labath, amccarth
Subscribers: tberghammer, danalbert, srhines, lldb-commits, dschuff
Differential Revision: https://reviews.llvm.org/D23545
llvm-svn: 280356
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There were a few corner cases that weren't tested for dealing with
extraction of an odd number of nibbles. Add tests for those here.
llvm-svn: 280253
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The rewrite of StringExtractor::GetHexMaxU32 changes functionality in a way which makes
lldb-server crash. The crash (assert) happens when parsing the "qRegisterInfo0" packet, because
the function tries to drop_front more bytes than the packet contains. It's not clear to me
whether we should consider this a bug in the caller or the callee, but it any case, it worked
before, so I am reverting this until we can figure out what the proper interface should be.
llvm-svn: 280207
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Makes Peek() return a StringRef instead of a const char*.
This leads to a few callers of Peek() being able to be made a
little nicer (for example using StringRef member functions instead
of c-style strncmp and related functions) and generally safer
usage.
llvm-svn: 280139
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This is a NFC that adds more unit test coverage of the GetHex***
functions as well as the functions to extract numbers with a
specific endianness.
llvm-svn: 280124
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MutableArrayRef<T> is essentially a safer version of passing around
(T*, length) pairs and provides some convenient functions for working
with the data without having to manually manipulate indices.
This is a minor NFC.
llvm-svn: 280123
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This reverts commit r279725 as it breaks "dynamic register size" feature of mips.
llvm-svn: 280088
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StringExtractor::GetNameColonValue() looks for a substring of the
form "<name>:<value>" and returns <name> and <value> to the caller.
This results in two unnecessary string copies, since the name and
value are not translated in any way and simply returned as-is.
By converting this to return StringRefs we can get rid of hundreds
of string copies.
llvm-svn: 280000
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These are helpful on their own, but will be even more useful
once the GetNameColonValue is updated to return StringRefs
instead of std::strings.
llvm-svn: 279919
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This started as an effort to change StringExtractor to store a
StringRef internally instead of a std::string. I got that working
locally with just 1 test failure which I was unable to figure out the
cause of. But it was also a massive changelist due to a trickle
down effect of changes.
So I'm starting over, using what I learned from the first time to
tackle smaller, more isolated changes hopefully leading up to
a full conversion by the end.
At first the changes (such as in this CL) will seem mostly
a matter of preference and pointless otherwise. However, there
are some places in my larger CL where using StringRef turned 20+
lines of code into 2, drastically simplifying logic. Hopefully
once these go in they will illustrate some of the benefits of
thinking in terms of StringRef.
llvm-svn: 279917
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Summary:
This is a preparatory commit for D22914, where I'd like to replace this mutex by an R/W lock
(which is also not recursive). This required a couple of changes:
- The only caller of Read/WriteRegister, GDBRemoteRegisterContext class, was already acquiring
the mutex, so these functions do not need to. All functions which now do not take a lock, take
an lock argument instead, to remind the caller of this fact.
- GetThreadSuffixSupported() was being called from locked and unlocked contexts (including
contexts where the process was running, and the call would fail if it did not have the result
cached). I have split this into two functions, one which computes the thread suffix support and
caches it (this one always takes the lock), and another, which returns the cached value (and
never needs to take the lock). This feels quite natural as ProcessGdbRemote was already
pre-caching this value at the start.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D23802
llvm-svn: 279725
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Also, when appending path components, collapse multiple "/" into one at the join.
llvm-svn: 279533
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+ small refactor
Summary:
The tricky part here was that the exisiting implementation of WriteAllRegisters was expecting
hex-encoded data (as that was what the first implementation I replaced was using, but here we had
binary data to begin with. I thought the read/write register functions would be more useful if
they handled the hex-encoding themselves (all the other client functions provide the responses in
a more-or-less digested form). The read functions return a DataBuffer, so they can allocate as
much memory as they need to, while the write functions functions take an llvm::ArrayRef, as that
can be constructed from pretty much anything.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D23659
llvm-svn: 279232
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This change adds the Process/gdb-remote gtests to the Xcode
build. It also adds a virtual method impl to the continuation
delegate that I added with the StructuredDataPlugin change.
llvm-svn: 279203
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llvm-svn: 279057
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Summary:
Before this, each function had a copy of the code which handled appending of the thread suffix to
the packet (or using $Hg instead). I have moved that code into a single function and made
everyone else use that. The function takes the partial packet as a StreamString rvalue reference,
to avoid a copy and to remind the users that the packet will have undeterminate contents after
the call.
This also fixes the incorrect formatting of the QRestoreRegisterState packet in case thread
suffix is not supported.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D23604
llvm-svn: 279040
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Summary:
CPlusPlusLanguage::MethodName was not correctly parsing templated functions whose demangled name
included the return type -- the space before the function name was included in the "context" and
the context itself was not terminated correctly due to a misuse of the substr function (second
argument is length, not the end position). Fix that and add a regression test.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D23608
llvm-svn: 279038
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Apparently clang will happily capture a const variable in a lambda without it being specified in
the capture clause. MSVC does not like that.
llvm-svn: 278925
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llvm-svn: 278918
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class
Summary:
When saving/restoring registers the GDBRemoteRegisterContext class was manually constructing
the register save/restore packets. This creates appropriate helper functions in
GDBRemoteCommunicationClient, and switches the class to use those. It also removes what a
duplicate packet send in some of those functions, a thing that I can only attribute to a bad
merge artefact.
I also add a test framework for testing gdb-remote client functionality and add tests for the new
functions I introduced. I'd like to be able to test the register context changes in isolation as
well, but currently there doesn't seem to be a way to reasonably construct a standalone register
context object, so we'll have to rely on the end-to-end tests to verify that.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D23553
llvm-svn: 278915
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Despite its comment, the function is only used in the Client class, and its presence was merely
complicating mock implementation in unit tests.
llvm-svn: 278785
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Summary:
The following problem was occuring:
- broadcaster B had two listeners: L1 and L2 (thread T1)
- (T1) B has started to broadcast an event, it has locked a shared_ptr to L1 (in
ListenerIterator())
- on another thread T2 the penultimate reference to L1 was destroyed (the transient object in B is
now the last reference)
- (T2) the last reference to L2 was destroyed as well
- (T1) B has finished broadcasting the event to L1 and destroyed the last shared_ptr
- (T1) this triggered the destructor, which called into B->RemoveListener()
- (T1) all pointers in the m_listeners list were now stale, so RemoveListener emptied the list
- (T1) Eventually control returned to the ListenerIterator() for doing broadcasting, which was
still in the middle of iterating through the list
- (T1) Only now, it was holding onto a dangling iterator. BOOM.
I fix this issue by making sure nothing can interfere with the
iterate-and-remove-expired-pointers loop, by moving this logic into a single function, which
first locks (or clears) the whole list and then returns the list of valid and locked Listeners
for further processing. Instead of std::list I use an llvm::SmallVector which should hopefully
offset the fact that we create a copy of the list for the common case where we have only a few
listeners (no heap allocations).
A slight difference in behaviour is that now RemoveListener does not remove an element from the
list -- it only sets it's mask to 0, which means it will be removed during the next iteration of
GetListeners(). This is purely an implementation detail and it should not be externally
noticable.
I was not able to reproduce this bug reliably without inserting sleep statements into the code,
so I do not add a test for it. Instead, I add some unit tests for the functions that I do modify.
Reviewers: clayborg, jingham
Subscribers: tberghammer, lldb-commits
Differential Revision: https://reviews.llvm.org/D23406
llvm-svn: 278664
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Python headers need to be included before PosixApi.h
llvm-svn: 278345
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and sent up to LLDB and converted to StructuredData, it would not be able to parse the full 64 bit value. A number like 0xf000000000000000L could be placed into a dictionary, and sent to LLDB and it would end up being 0xffffffffffffffff since it would overflow a int64_t. We leave the old code there, but if it overflows, we treat the number like a uint64_t and get it to decode correctly. Added a gtest to cover this so we don't regress. I verified the gtest failed prior to the fix, and it succeeds after it.
<rdar://problem/27409265>
llvm-svn: 278304
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Resumbitting the commit after fixing the following problems:
- broken unit tests on windows: incorrect gtest usage on my part (TEST vs. TEST_F)
- the new code did not correctly handle the case where we went to interrupt the process, but it
stopped due to a different reason - the interrupt request would remain queued and would
interfere with the following "continue". I also added a unit test for this case.
This reapplies r277156 and r277139.
llvm-svn: 278118
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This reverts commit r277139, because:
- broken unittest on windows (likely typo on my part)
- seems to break TestCallThatRestart (needs investigation)
llvm-svn: 277154
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SendContinuePacketAndWaitForResponse was huge function with very complex interactions with
several other functions (SendAsyncSignal, SendInterrupt, SendPacket). This meant that making any
changes to how packet sending functions and threads interact was very difficult and error-prone.
This change does not add any functionality yet, it merely paves the way for future changes. In a
follow-up, I plan to add the ability to have multiple query packets in flight (i.e.,
request,request,response,response instead of the usual request,response sequences) and use that
to speed up qModuleInfo packet processing.
Here, I introduce two special kinds of locks: ContinueLock, which is used by the continue thread,
and Lock, which is used by everyone else. ContinueLock (atomically) sends a continue packet, and
blocks any other async threads from accessing the connection. Other threads create an instance of
the Lock object when they want to access the connection. This object, while in scope prevents the
continue from being send. Optionally, it can also interrupt the process to gain access to the
connection for async processing.
Most of the syncrhonization logic is encapsulated within these two classes. Some of it still
had to bleed over into the SendContinuePacketAndWaitForResponse, but the function is still much
more manageable than before -- partly because of most of the work is done in the ContinueLock
class, and partly because I have factored out a lot of the packet processing code separate
functions (this also makes the functionality more easily testable). Most importantly, there is
none of syncrhonization code in the async thread users -- as far as they are concerned, they just
need to declare a Lock object, and they are good to go (SendPacketAndWaitForResponse is now a
very thin wrapper around the NoLock version of the function, whereas previously it had over 100
lines of synchronization code). This will make my follow up changes there easy.
I have written a number of unit tests for the new code and I have ran the test suite on linux and
osx with no regressions.
Subscribers: tberghammer
Differential Revision: https://reviews.llvm.org/D22629
llvm-svn: 277139
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Summary:
The function was returning the null pointer for peeks of size zero, which seems like a sensible
thing to do, but is actually pretty easy to get bitten by that if you are extracting a variable
length field which happens to be of zero length and then doing pointer arithmetic on that (which
SymbolFileDWARF does, and ended up crashing in case of empty DW_AT_location).
This changes the function to return a null pointer only when it gets queried for data which is
outside of the range of the extractor, which is more c++-y, as one can still do reasonable things
with pointers to data of size zero (think, end() iterators).
I also add a test and fix some signedness warnings in the existing data extractor tests.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D22755
llvm-svn: 276734
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llvm-svn: 272284
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Reviewers: ovyalov, zturner
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D20570
llvm-svn: 270684
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same size.
Summary: One of the cases handled by ValueObjectChild::UpdateValue() uses the entire width of the parent's scalar value as the size of the child, and extracts the child by calling Scalar::ExtractBitfield(). This seems valid but APInt::trunc(), APInt::sext() and APInt::zext() assert that the bit field must not have the same size as the parent scalar. Replacing those calls with sextOrTrunc(), zextOrTrunc(), sextOrSelf() and zextOrSelf() fixes the assertion failures.
Reviewers: uweigand, labath
Subscribers: labath, lldb-commits
Differential Revision: http://reviews.llvm.org/D20355
llvm-svn: 270062
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llvm-svn: 269057
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This reverts commit r268380 as it breaks windows build (I forgot to make neccesary adjustments to
ConnectionGenericFileWindows).
llvm-svn: 268384
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Summary:
AdbClient was attempting to handle the case where the socket input arrived in pieces, but it was
failing to handle the case where the connection was closed before that happened. In this case, it
would just spin in an infinite loop calling Connection::Read. (This was also the cause of the
spurious timeouts on the darwin->android buildbot. The exact cause of the premature EOF remains
to be investigated, but is likely a server bug.)
Since this wait-for-a-certain-number-of-bytes seems like a useful functionality to have, I am
moving it (with the infinite loop fixed) to the Connection class, and adding an
appropriate test for it.
Reviewers: clayborg, zturner, ovyalov
Subscribers: tberghammer, danalbert, lldb-commits
Differential Revision: http://reviews.llvm.org/D19533
llvm-svn: 268380
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llvm-svn: 267688
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llvm-svn: 266886
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Recommit modified version of r266311 including build bot regression fix.
This differs from the original r266311 by:
- Fixing Scalar::Promote to correctly zero- or sign-extend value depending
on signedness of the *source* type, not the target type.
- Omitting a few stand-alone fixes that were already committed separately.
llvm-svn: 266422
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This implements a PDBASTParser and corresponding logic in
SymbolFilePDB to do type lookup by name. This is just a first
pass and leaves many aspects of type lookup unimplemented, and
just focuses on laying the framework. With this patch, you should
be able to lookup basic types by name from a PDB.
Full class definitions are not completed yet, we will instead
just return a forward declaration of the class.
Differential Revision: http://reviews.llvm.org/D18848
Reviewed by: Greg Clayton
llvm-svn: 266392
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Try to get 32-bit build bots running again.
llvm-svn: 266341
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Currently, the DataExtractor::GetMaxU64Bitfield and GetMaxS64Bitfield
routines assume the incoming "bitfield_bit_offset" parameter uses
little-endian bit numbering, i.e. a bitfield_bit_offset 0 refers to
a bitfield whose least-significant bit coincides with the least-
significant bit of the surrounding integer.
On many big-endian systems, however, the big-endian bit numbering
is used for bit fields. Here, a bitfield_bit_offset 0 refers to
a bitfield whose most-significant bit conincides with the most-
significant bit of the surrounding integer.
Now, in principle LLDB could arbitrarily choose which semantics of
bitfield_bit_offset to use. However, there are two problems with
the current approach:
- When parsing DWARF, LLDB decodes bit offsets in little-endian
bit numbering on LE systems, but in big-endian bit numbering
on BE systems. Passing those offsets later on into the
DataExtractor routines gives incorrect results on BE.
- In the interim, LLDB's type layer combines byte and bit offsets
into a single number. I.e. instead of recording bitfields by
specifying the byte offset and byte size of the surrounding
integer *plus* the bit offset of the bit field within that field,
it simply records a single bit offset number.
Now, note that converting from byte offset + bit offset to a
single offset value and back is well-defined if we either use
little-endian byte order *and* little-endian bit numbering,
or use big-endian byte order *and* big-endian bit numbering.
Any other combination will yield incorrect results.
Therefore, the simplest approach would seem to be to always use
the bit numbering that matches the system byte order. This makes
storing a single bit offset valid, and makes the existing DWARF
code correct. The only place to fix is to teach DataExtractor
to use big-endian bit numbering on big endian systems.
However, there is only additional caveat: we also get bit offsets
from LLDB synthetic bitfields. While the exact semantics of those
doesn't seem to be well-defined, from test cases it appears that
the intent was for the user-provided synthetic bitfield offset to
always use little-endian bit numbering. Therefore, on a big-endian
system we now have to convert those to big-endian bit numbering
to remain consistent.
Differential Revision: http://reviews.llvm.org/D18982
llvm-svn: 266312
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The Scalar implementation and a few other places in LLDB directly
access the internal implementation of APInt values using the
getRawData method. Unfortunately, pretty much all of these places
do not handle big-endian systems correctly. While on little-endian
machines, the pointer returned by getRawData can simply be used as
a pointer to the integer value in its natural format, no matter
what size, this is not true on big-endian systems: getRawData
actually points to an array of type uint64_t, with the first element
of the array always containing the least-significant word of the
integer. This means that if the bitsize of that integer is smaller
than 64, we need to add an offset to the pointer returned by
getRawData in order to access the value in its natural type, and
if the bitsize is *larger* than 64, we actually have to swap the
constituent words before we can access the value in its natural type.
This patch fixes every incorrect use of getRawData in the code base.
For the most part, this is done by simply removing uses of getRawData
in the first place, and using other APInt member functions to operate
on the integer data.
This can be done in many member functions of Scalar itself, as well
as in Symbol/Type.h and in IRInterpreter::Interpret. For the latter,
I've had to add a Scalar::MakeUnsigned routine to parallel the existing
Scalar::MakeSigned, e.g. in order to implement an unsigned divide.
The Scalar::RawUInt, Scalar::RawULong, and Scalar::RawULongLong
were already unused and can be simply removed. I've also removed
the Scalar::GetRawBits64 function and its few users.
The one remaining user of getRawData in Scalar.cpp is GetBytes.
I've implemented all the cases described above to correctly
implement access to the underlying integer data on big-endian
systems. GetData now simply calls GetBytes instead of reimplementing
its contents.
Finally, two places in the clang interface code were also accessing
APInt.getRawData in order to actually construct a byte representation
of an integer. I've changed those to make use of a Scalar instead,
to avoid having to re-implement the logic there.
The patch also adds a couple of unit tests verifying correct operation
of the GetBytes routine as well as the conversion routines. Those tests
actually exposed more problems in the Scalar code: the SetValueFromData
routine didn't work correctly for 128- and 256-bit data types, and the
SChar routine should have an explicit "signed char" return type to work
correctly on platforms where char defaults to unsigned.
Differential Revision: http://reviews.llvm.org/D18981
llvm-svn: 266311
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Summary:
In D18689, I removed the call to Normalize() in FileSpec::SetFile, because it no longer seemed
needed, and it resolved a quirk in the FileSpec API (spec.GetCString() returnes a path with
backslashes, but spec.GetDirectory().GetCString() has forward slashes). This turned out to be a
problem because we would consider paths with different separators as different (which led to
unresolved breakpoints for instance).
Here, I am putting back in the call to Normalize() and adding a unittest for FileSpec::Equal. I
am commenting out the GetDirectory unittests until we figure out the what is the expected
behaviour here.
Reviewers: zturner
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D19060
llvm-svn: 266286
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llvm-svn: 266196
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This time it should also pass the gtests
llvm-svn: 266103
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Summary:
Even though FileSpec attempted to handle both kinds of path syntaxes (posix and windows) on both
platforms, it relied on the llvm path library to do its work, whose behavior differed on
different platforms. This led to subtle differences in FileSpec behavior between platforms. This
replaces the pieces of the llvm library with our own implementations. The functions are simply
copied from llvm, with #ifdefs replaced by runtime checks for ePathSyntaxWindows.
Reviewers: zturner
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D18689
llvm-svn: 265299
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In doing so, two bugs were uncovered (and fixed). The first bug
is that ClangASTContext::RemoveFastQualifiers() was broken, and
was not removing fast qualifiers (or doing anything else for that
matter). The second bug is that UnifyAccessSpecifiers treated
AS_None asymmetrically, which is probably an edge case, but seems
like a bug nonetheless.
llvm-svn: 265200
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